Motor suspension and automobile

Abstract

The application relates to the automobile technical field and discloses a motor suspension and an automobile, which comprise a first permanent magnet mechanism, a second permanent magnet mechanism, a shell mechanism, a coil mechanism and a rolling mechanism; the first permanent magnet mechanism and the second permanent magnet mechanism are fixedly installed in the interior of the shell mechanism, the second permanent magnet mechanism is annularly arranged on the first permanent magnet mechanism and is arranged in a spaced mode with the first permanent magnet mechanism, the interval between the first permanent magnet mechanism and the second permanent magnet mechanism forms an insertion space for the coil mechanism, the coil mechanism can move relative to the shell mechanism along the extension direction of the insertion space and cut the magnetic field generated by the first permanent magnet mechanism and the second permanent magnet mechanism; and the rolling mechanism is rollably connected to the shell mechanism and is used for rolling abutting against the coil mechanism when the shell mechanism and the coil mechanism relatively move. The motor suspension and the automobile provided by the application reduce the friction force generated by the motor suspension during work and reduce the consumption of friction work.

Description

Technical Field

[0001] This application relates to the field of automotive technology, specifically to an electric motor suspension and an automobile. Background Technology

[0002] A linear motor consists of a permanent magnet and a coil. Its working principle involves the coil cutting the magnetic lines of force generated by the permanent magnet, thus creating an electric current. This current flows into the coil to form a magnetic field that attracts or repels the permanent magnet, generating a damping force similar to that of a suspension spring. This can be applied to vehicles to actively adjust different vehicle body postures and wheel height, resulting in higher passability and stability even on complex road conditions.

[0003] Linear motor suspensions in related technologies generally include a stator and a mover. Under the action of external force, the mover can move linearly relative to the stator, thereby adjusting the relative position between the axle and the frame.

[0004] However, in this type of linear motor suspension, the stator and mover need to overcome a large frictional force to move relative to each other, which consumes frictional work and will have a certain impact on the stability of the vehicle body. Summary of the Invention

[0005] In view of this, this application provides an electric motor suspension and an automobile that reduces the frictional force generated by the electric motor suspension during operation and reduces the consumption of frictional work.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of this application provides a motor suspension, which includes: a first permanent magnet mechanism, a second permanent magnet mechanism, a housing mechanism, a coil mechanism, and a rolling mechanism;

[0008] The first permanent magnet mechanism and the second permanent magnet mechanism are fixedly installed inside the housing mechanism. The second permanent magnet mechanism is arranged around the first permanent magnet mechanism and spaced apart from the first permanent magnet mechanism. The gap between the first permanent magnet mechanism and the second permanent magnet mechanism forms an insertion space for the coil mechanism to be inserted. The coil mechanism can move relative to the housing mechanism along the extension direction of the insertion space and cut the magnetic field generated by the first permanent magnet mechanism and the second permanent magnet mechanism.

[0009] The rolling mechanism is rotatably connected to the housing mechanism and is used to roll against the coil mechanism when the housing mechanism and the coil mechanism move relative to each other.

[0010] Optionally, the coil mechanism has a cavity formed inside for cooperating with the housing mechanism;

[0011] The rolling mechanism includes at least two rolling parts arranged radially along the housing mechanism, and rolling abutting against the inner wall of the cavity and the outer wall of the coil mechanism respectively when the housing mechanism and the coil mechanism move relative to each other.

[0012] Optionally, the coil mechanism includes a first abutment section, a coil section, and a second abutment section connected in sequence;

[0013] The inner and outer walls of the coil segment are recessed toward each other to form a first groove and a second groove for accommodating the coil. The coil is disposed in at least one of the first groove and the second groove, and the depth of the first groove and the depth of the second groove are both greater than the thickness of the coil.

[0014] When the housing mechanism and the coil mechanism move relative to each other, the rolling mechanism rolls against at least one of the first abutting section and the second abutting section.

[0015] Optionally, the housing mechanism has an annular receiving space inside, and the first permanent magnet mechanism and the second permanent magnet mechanism are located within the annular receiving space;

[0016] The housing mechanism includes a first connecting portion located in the annular receiving space and connected to a first surface and a second surface of the annular receiving space, with the first surface and the second surface facing each other.

[0017] The first connecting part has at least two mounting grooves inside, and the at least two rolling parts are respectively disposed in the at least two mounting grooves.

[0018] Optionally, at least one of the first connecting part and the housing mechanism is a magnetic field constraint member, used to constrain the magnetic field generated by the first permanent magnet mechanism and the second permanent magnet mechanism from spreading to the outside.

[0019] Optionally, the magnetic field constraint component is a magnetic yoke structure made of any one of the following materials: soft iron, carbon steel, and soft magnetic alloy.

[0020] Optionally, the number of the first connecting parts is at least two, and the at least two first connecting parts are evenly distributed in the annular accommodating space, dividing the annular accommodating space into at least two accommodating subspaces;

[0021] The first permanent magnet mechanism includes at least two first permanent magnets, and the second permanent magnet mechanism includes at least two second permanent magnets. One first permanent magnet and one second permanent magnet are spaced apart to form a permanent magnet pair. The permanent magnet pairs are disposed within the accommodating subspace and correspond one-to-one.

[0022] Optionally, the first permanent magnet and the second permanent magnet in the permanent magnet pair have opposite magnetic poles on the side closest to each other.

[0023] Optionally, the housing mechanism further includes a second connecting portion, and the coil mechanism further includes a third connecting portion, wherein either the second connecting portion or the third connecting portion is used to connect to the axle, and the other is used to connect to the vehicle frame.

[0024] A second aspect of this application provides an automobile including the aforementioned motor suspension.

[0025] The beneficial effects of the technical solutions provided in this application include at least the following:

[0026] In the motor suspension and automobile provided in this application embodiment, the coil mechanism can be inserted into the insertion space between the first permanent magnet mechanism and the second permanent magnet mechanism, and can move along the extension direction of the insertion space to cut the magnetic field and generate current. After the current passes through the coil, it can generate an electromagnetic force that is the same as or opposite to the direction of movement, thereby adjusting the relative position between the housing mechanism and the coil mechanism to buffer the bumpy wheels, or actively adjust the distance between the wheels and the vehicle body. Furthermore, the rolling mechanism rolls against the coil mechanism. Compared with the motor suspension in the related technology, the motor suspension provided in this application embodiment converts the planar friction force generated between the coil mechanism and the housing mechanism when the coil mechanism moves into rolling friction force. The friction force is smaller, which reduces the consumption of friction work and makes the relative movement between the coil mechanism and the housing mechanism smoother. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A cross-sectional view of a motor suspension provided in an embodiment of this application is shown;

[0029] Figure 2 This illustration shows a first structural schematic diagram of the housing mechanism in the motor suspension provided in an embodiment of this application;

[0030] Figure 3 This illustration shows a second structural schematic diagram of the housing mechanism in the motor suspension provided in an embodiment of this application;

[0031] Figure 4 This invention provides a schematic diagram of the coil mechanism in a motor suspension according to an embodiment of the present application.

[0032] Figure 5This illustration shows a partially enlarged schematic diagram of the motor suspension provided in an embodiment of this application;

[0033] Figure 6 A schematic diagram of the magnetic field lines of the motor suspension provided in an embodiment of this application is shown;

[0034] Figure 7 The diagram shows a schematic representation of the structure of the first permanent magnet mechanism and the second permanent magnet mechanism in the motor suspension provided in an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. First permanent magnet mechanism; 11. First permanent magnet; 12. Permanent magnet pair;

[0037] 2. Second permanent magnet mechanism; 21. Second permanent magnet;

[0038] 3. Shell mechanism; 31. Insertion space; 32. Annular receiving space; 321. Receiving sub-space; 33. First connecting part; 331. Mounting groove; 332. Inner connecting rib; 333. Outer connecting rib; 34. Second connecting part; 35. First sleeve; 351. First surface; 36. Second sleeve; 361. Second surface;

[0039] 4. Coil mechanism; 41. Cavity; 42. First abutting section; 43. Coil section; 431. First groove; 432. Second groove; 433. Coil; 44. Second abutting section; 45. Third connecting part; 451. Elastic element;

[0040] 5. Rolling mechanism; 51. Rolling part; 511. Ball bearing.

[0041] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. To make the technical solutions and advantages of this application clearer, the motor suspension and automobile, etc., will be described in detail below with reference to the accompanying drawings.

[0043] A linear motor consists of a permanent magnet and a coil. Its working principle involves the coil cutting the magnetic lines of force generated by the permanent magnet, thus creating an electric current. This current flows into the coil to form a magnetic field that attracts or repels the permanent magnet, generating a damping force similar to that of a suspension spring. This can be applied to vehicles to actively adjust different vehicle body postures and wheel height, resulting in higher passability and stability even on complex road conditions.

[0044] Linear motor suspensions in related technologies generally include a stator and a mover. Under the action of external force, the mover can move linearly relative to the stator, thereby adjusting the relative position between the axle and the frame.

[0045] However, in this type of linear motor suspension, the stator and mover need to overcome a large frictional force to move relative to each other, which consumes frictional work and will have a certain impact on the stability of the vehicle body.

[0046] This application provides a motor suspension, such as... Figure 1 and Figure 2 As shown, the motor suspension may include: a first permanent magnet mechanism 1, a second permanent magnet mechanism 2, a housing mechanism 3, a coil mechanism 4, and a rolling mechanism 5; the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 are fixedly installed inside the housing mechanism 3, the second permanent magnet mechanism 2 is arranged around the first permanent magnet mechanism 1 and spaced apart from the first permanent magnet mechanism 1, the gap between the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 forms an insertion space 31 for the coil mechanism 4 to be inserted, the coil mechanism 4 can move relative to the housing mechanism 3 along the extension direction of the insertion space 31, and cut the magnetic field generated by the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2; the rolling mechanism 5 is rotatably connected to the housing mechanism 3, and is used to roll against the coil mechanism 4 when the housing mechanism 3 and the coil mechanism 4 move relative to each other.

[0047] In the motor suspension provided in this application embodiment, the coil mechanism 4 can be inserted into the insertion space 31 between the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2, and can move along the extension direction of the insertion space 31 to cut the magnetic field and generate current; after current passes through the coil 433, it can generate an electromagnetic force that is the same as or opposite to the direction of movement, thereby adjusting the relative position between the housing mechanism 3 and the coil mechanism 4 to buffer the bumpy wheels, or actively adjust the distance between the wheels and the vehicle body; and the rolling mechanism 5 rolls against the coil mechanism 4. Compared with the motor suspension in the related technology, the motor suspension provided in this application embodiment converts the planar friction force generated between the coil mechanism 4 and the housing mechanism 3 when moving into rolling friction force. The friction force is smaller, reducing the consumption of friction work, while making the relative movement between the coil mechanism 4 and the housing mechanism 3 smoother.

[0048] According to the formula F = BIL, where B is the magnetic induction intensity at the location of the coil mechanism 4, I is the current intensity in the coil mechanism 4, and L is the axial length of the coil mechanism 4, the motor suspension provided in this application can enhance the magnetic force F by changing the magnetic induction intensity B at the location of the coil mechanism 4. Therefore, the motor suspension provided in this application, by providing a first permanent magnet mechanism 1 and a second permanent magnet mechanism 2 on the inner and outer sides of the coil mechanism 4 respectively, can increase the magnetic induction intensity B, thereby increasing the magnetic force provided by the motor suspension, and thus enabling the motor suspension to withstand a greater load when subjected to impact.

[0049] In some embodiments of this application, such as Figure 1 As shown, the lower part of the housing mechanism 3 is a closed structure, that is, the insertion space 31 has only one side opening for the coil mechanism 4 to be inserted; wherein, the coil mechanism 4 can move along the extension direction of the insertion space 31 and abut against the closed end of the insertion space 31 when it moves to the limit position.

[0050] In some embodiments of this application, such as Figure 1 and Figure 3 As shown, the coil mechanism 4 has a cavity 41 formed inside for cooperating with the housing mechanism 3; the rolling mechanism 5 includes at least two rolling parts 51, which are arranged radially along the housing mechanism 3 and roll against the inner wall of the cavity 41 and the outer wall of the coil mechanism 4 respectively when the housing mechanism 3 and the coil mechanism 4 move relative to each other.

[0051] In the motor suspension provided in this embodiment, at least two rolling parts 51 in the rolling mechanism 5 are arranged radially along the housing mechanism 3 and respectively abut against the inner wall of the cavity 41 and the outer wall of the coil mechanism 4. This converts the planar friction between the inner wall of the cavity 41 and the outer wall of the coil mechanism 4 and the housing mechanism 3 into rolling friction when the housing mechanism 3 and the coil mechanism 4 move relative to each other. This not only makes the relative movement of the housing mechanism 3 and the coil mechanism 4 along the insertion space 31 smoother, but also improves the responsiveness of the motor suspension when the vehicle is bumpy or when the height between the wheels and the vehicle body needs to be actively adjusted, ensuring the stability of the vehicle body during driving.

[0052] Optionally, the rolling part 51 includes a plurality of ball bearings 511, which are arranged along the height direction of the housing mechanism 3, thereby reducing the frictional force generated when the housing mechanism 3 and the coil mechanism 4 move relative to each other and reducing the consumption of frictional work.

[0053] In some embodiments of this application, the coil mechanism 4 may include a first abutting section 42, a coil section 43, and a second abutting section 44 connected in sequence; the inner and outer walls of the coil section 43 are recessed toward each other to form a first groove 431 and a second groove 432 for accommodating the coil 433, the coil 433 is disposed in at least one of the first groove 431 and the second groove 432, and the depth of the first groove 431 and the depth of the second groove 432 are both greater than the thickness of the coil 433; wherein, when the housing mechanism 3 and the coil mechanism 4 move relative to each other, the rolling mechanism 5 rolls against at least one of the first abutting section 42 and the second abutting section 44.

[0054] like Figure 4 and Figure 5 As shown, a coil 433 is wound on a portion of the coil mechanism 4 (i.e., coil segment 43) to cut the magnetic field generated by the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2. Because the motor suspension provided in this embodiment of the application has a rolling part 51 to reduce the friction generated when the housing mechanism 3 and the coil mechanism 4 move relative to each other, converting planar friction into rolling friction, the coil 433 cannot directly contact the rolling mechanism 5, as this would damage the coil 433 and prevent the motor suspension from working properly. Therefore, the motor suspension provided in this embodiment of the application has a first abutment section 42 and a second abutment section 44 connected to both sides of the coil segment 43 for rolling contact with the rolling part 51; and the coil 433 is located in the first groove 431 and / or the second groove 432, the depth of which is greater than the thickness of the coil 433, meaning that the rolling part 51 avoids contact with the coil 433 when passing through the coil segment 43.

[0055] In other words, when the coil mechanism 4 is inserted into the insertion space 31 within the housing mechanism 3, the second abutting section 44 first rolls against the rolling part 51; after moving a certain distance, the coil section 43 partially enters the insertion space 31, but does not contact the rolling part 51; continuing to move, when the coil section 43 is fully inserted into the insertion space 31, the first abutting section 42 abuts against the rolling part 51. At this time, both the first abutting section 42 and the second abutting section 44 are in direct contact with the rolling part 51, and there is a certain gap between the coil 433 and the rolling part 51. At this point, the assembly is complete. When the motor suspension is working, the first abutting part and the second abutting part are always in direct contact with the rolling part 51, and there is always a gap between the coil 433 and the rolling part 51, which avoids damage to the coil 433; at the same time, since the first abutting section 42 and the second abutting section 44 are always in direct contact with the housing mechanism 3, when the motor suspension is subjected to lateral force (force perpendicular to the motor suspension), it can better bear the load, avoiding deformation of the motor suspension and thus affecting the function of the motor suspension.

[0056] In some embodiments, such as Figure 5 As shown, coils 433 are provided in both the first groove 431 and the second groove 432 on the coil segment 43. When the housing mechanism 3 and the coil mechanism 4 move relative to each other, the two layers of coils 433 on the inner and outer walls of the coil segment 43 cut the magnetic field lines simultaneously. Compared with the motor suspension with a single layer of coils 433, a greater current intensity can be obtained, thereby generating a greater electromagnetic force.

[0057] It should be noted that by setting the ball bearing 511, not only can the consumption of frictional work be reduced, but the gap between the coil 433 on the coil mechanism 4 and the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 can also be ensured to be small enough, thereby improving the magnetic field utilization rate and making the magnetic field force relatively stable without fluctuations. In addition, with the first groove 431 and the second groove 432, it can be ensured that the coil 433 will not rub against the ball bearing 511, thus avoiding damage to the coil 433 and the situation where the motor suspension cannot work properly.

[0058] Those skilled in the art can select and adjust the lengths of the first abutment section 42, the second abutment section 44, and the coil section 43 according to actual needs.

[0059] In some embodiments of this application, such as Figure 2 and Figure 3 As shown, the housing mechanism 3 can form an annular receiving space 32 inside, and the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 are located in the annular receiving space 32; the housing mechanism 3 includes a first connecting part 33, which is located in the annular receiving space 32 and is connected to the first surface 351 and the second surface 361 of the annular receiving space 32 respectively, and the first surface 351 and the second surface 361 are opposite to each other; wherein, the interior of the first connecting part 33 has at least two mounting grooves 331, and at least two rolling parts 51 are respectively disposed in the at least two mounting grooves 331.

[0060] In the motor suspension provided in this application embodiment, a first connecting part 33 is provided in the annular accommodating space 32 of the housing mechanism 3. The first connecting part 33 is fixedly connected to the first surface 351 and the second surface 361 respectively. When the housing mechanism 3 and the coil mechanism 4 move relative to each other, the rolling part 51 only rotates in the mounting groove 331 and does not generate displacement between it and the housing mechanism 3. It is only used to convert the planar friction between the coil mechanism 4 and the housing mechanism 3 into rolling friction.

[0061] Furthermore, by placing the first permanent magnet mechanism 1 on the inner peripheral wall of the second sleeve 36 and the second permanent magnet mechanism 2 on the outer peripheral wall of the first sleeve 35, the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 are respectively located on the inner peripheral wall of the insertion space 31, which can reduce the distance between the first permanent magnet mechanism 1, the second permanent magnet mechanism 2 and the coil 433. Therefore, this arrangement can make full use of the magnetic field inside and outside the coil 433, and improve the utilization rate of magnetic field energy.

[0062] In some embodiments, such as Figure 6 As shown, the housing mechanism 3 may include a first sleeve 35 and a second sleeve 36. The second sleeve 36 is arranged around the outside of the first sleeve 35 and has a gap between it and the first sleeve 35. This gap forms the aforementioned annular receiving space 32 for accommodating the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2. The first connecting part 33 is connected to the outer wall (first surface 351) of the first sleeve 35 and the inner wall (second surface 361) of the second sleeve 36, respectively.

[0063] In some embodiments, the first sleeve 35 is a hollow cylindrical structure with an open upper end and a closed lower end. Since the first sleeve 35 is hollow, the weight of the housing mechanism 3 is reduced, and it can move relative to the coil mechanism 4 with less magnetic force, resulting in higher response sensitivity and improved energy utilization of the motor suspension.

[0064] In some embodiments, the first connecting portion 33 includes an inner connecting rib 332 and an outer connecting rib 333. Both the inner connecting rib 332 and the outer connecting rib 333 are provided with mounting grooves 331, and there is a gap between the inner connecting rib 332 and the outer connecting rib 333, which is part of the insertion space 31.

[0065] In some embodiments of this application, such as Figure 6 As shown, at least one of the first connecting part 33 and the housing mechanism 3 is a magnetic field constraint member, used to constrain the magnetic field generated by the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2 from spreading to the outside.

[0066] In some embodiments, to reduce the loss of magnetic field energy, the first connection portion 33 and / or the housing mechanism 3 are configured as magnetic field restraint elements. For example... Figure 6 As shown, the magnetic field lines pass through the insertion space 31 from the first permanent magnet mechanism 1 and enter the second permanent magnet mechanism 2, then the second sleeve 36, and then flow through the peripheral wall of the second sleeve 36 to the first connecting part 33, and then through the first connecting part 33 to the first sleeve 35, forming a stable magnetic field; wherein, the first connecting part 33 and the shell mechanism 3 restrict the magnetic field from spreading to the outside, effectively reducing the loss of magnetic field energy.

[0067] Optionally, the magnetic field confinement component is a magnetic yoke structure made of any one of the following materials: soft iron, carbon steel, and soft magnetic alloy. Those skilled in the art can select and adjust the material of the magnetic field confinement component according to actual needs.

[0068] Optionally, the first connecting part 33 is made of the same material as the housing mechanism 3, and the first connecting part 33 and the housing mechanism 3 are integrally formed.

[0069] It should be noted that a magnetic yoke usually refers to a structure that does not produce a magnetic field (magnetic field lines) itself, but only serves as a transmission structure for magnetic field lines in a magnetic circuit. The transmission of magnetic field within the magnetic yoke has a higher priority than the diffusion of magnetic field to the outside world.

[0070] In some embodiments of this application, such as Figure 3 and Figure 6 As shown, there are at least two first connecting parts 33, which are evenly distributed in the annular accommodating space 32 and divide the annular accommodating space 32 into at least two accommodating subspaces 321; the first permanent magnet mechanism 1 includes at least two first permanent magnets 11, and the second permanent magnet mechanism 2 includes at least two second permanent magnets 21. A first permanent magnet 11 and a second permanent magnet 21 are spaced apart to form a permanent magnet pair 12, which is disposed in the accommodating subspace 321 and corresponds one to one.

[0071] To better limit the diffusion of the magnetic field, at least two first connecting portions 33 are provided, and these two first connecting portions 33 are evenly distributed. Due to the increased number of first connecting portions 33, the magnetic field lines, after passing through the second permanent magnet mechanism 2, can reach the first connecting portions 33 via a shorter path, and then return to the first sleeve 35 through the first connecting portions 33, further reducing the loss of magnetic field energy. Furthermore, the first connecting portions 33 divide the annular receiving space 32 into receiving sub-spaces 321, each receiving sub-space 321 corresponding to a pair of permanent magnets 12. In this case, the first permanent magnet 11 and the second permanent magnet 21 of the permanent magnet pair 12 do not need to be annular, but can be part of an annular structure, reducing manufacturing difficulty.

[0072] For example, as shown in the figure, there are four first connecting parts 33, which are evenly distributed within the annular receiving space 32, dividing the annular receiving space 32 into four receiving sub-spaces 321. Four permanent magnet pairs 12 are respectively disposed within the four receiving sub-spaces 321. Each receiving sub-space 321 contains a first permanent magnet 11 and a second permanent magnet 21 spaced apart, the interval between the first permanent magnet 11 and the second permanent magnet 21 forming an insertion space 31 for the coil mechanism 4 to be inserted. Each first connecting part 33 includes an inner connecting rib 332 and an outer connecting rib 333, and a ball bearing 511 is disposed within the mounting groove 331 of the inner connecting rib 332 and the outer connecting rib 333. Furthermore, the inner connecting rib 332, the outer connecting rib 333, the first sleeve 35, and the second sleeve 36 are all magnetic yoke structures.

[0073] Optionally, those skilled in the art can select and adjust the number of the first connecting parts 33 according to actual needs.

[0074] Optionally, the magnetic poles of the first permanent magnet 11 and the second permanent magnet 21 in the permanent magnet pair 12 are opposite on the side closest to each other.

[0075] In some embodiments, such as Figure 6 and Figure 7 As shown, within the accommodating subspace 321, the first permanent magnet 11 and the second permanent magnet 21 are positioned opposite each other. Both the first permanent magnet 11 and the second permanent magnet 21 can be magnetized radially with the outer N pole and the inner S pole, or they can be magnetized radially with the outer S pole and the inner N pole. Those skilled in the art can select and adjust the magnetic pole directions of the first permanent magnet 11 and the second permanent magnet according to actual needs.

[0076] For example, such as Figure 6 As shown, the first permanent magnet 11 and the second permanent magnet 21 are arranged in an inner layer of four and an outer layer of four along the circumferential direction of the annular accommodating space 32, facing each other in pairs. In this embodiment, each of the first permanent magnet 11 and the second permanent magnet 21 can be magnetized by radial magnetization with the outer N pole and the inner S pole, or by radial magnetization with the outer S pole and the inner N pole.

[0077] It should be noted that the outer side mentioned above refers to the side of the first permanent magnet 11 or the second permanent magnet 21 that is away from the first sleeve 35, and the inner side is opposite to the outer side.

[0078] In some embodiments of this application, such as Figure 1 As shown, the housing mechanism 3 may also include a second connecting part 34, and the coil mechanism 4 may also include a third connecting part 45. Either the second connecting part 34 or the third connecting part 45 is used to connect to the axle, and the other is used to connect to the frame.

[0079] In the motor suspension provided in this application embodiment, the coil mechanism 4 and the housing mechanism 3 are interchangeable, one connected to the axle and the other connected to the frame; the part connected to the axle is the mover part, and the part connected to the frame is the stator part. The distance between the axle and the frame can be adjusted by driving the mover part to move relative to the stator part, or when the car is bumpy, the wheels drive the axle to move up and down, thereby driving the mover part to move linearly; at this time, the coil 433 cuts the magnetic field generated by the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2, and a current is generated inside the coil 433, thereby generating a force opposite to the direction of movement, so as to buffer the frame and prevent the vibration of the wheels from being transmitted to the frame, thus ensuring the stability of the car body during driving.

[0080] In some embodiments, at least one of the second connecting portion 34 and the third connecting portion 45 has an elastic element 451. The second connecting portion 34 and the third connecting portion 45 have a first mounting hole and a second mounting hole respectively. The elastic element 451 is installed in the first mounting hole and is interference-fitted with the side wall of the first mounting hole. Bolts can be passed through the elastic element 451 and connected to the vehicle body or the steering knuckle of the axle. The elastic element 451 can play a vibration isolation role during vehicle operation, thereby improving ride comfort and driving stability.

[0081] Optionally, the elastic element 451 can be a rubber bushing or a rubber bracket.

[0082] This application also provides an automobile that includes the above-described motor suspension.

[0083] In the automobile provided in this application embodiment, the coil mechanism 4 can be inserted into the insertion space 31 between the first permanent magnet mechanism 1 and the second permanent magnet mechanism 2, and can move along the extension direction of the insertion space 31 to cut the magnetic field and generate current; after current passes through the coil 433, it can generate an electromagnetic force that is the same as or opposite to the direction of movement, thereby adjusting the relative position between the housing mechanism 3 and the coil mechanism 4 to buffer the bumpy wheels, or actively adjust the distance between the wheels and the body; and the rolling mechanism 5 rolls against the coil mechanism 4. Compared with the motor suspension in the related technology, the motor suspension provided in this application embodiment converts the planar friction force generated between the coil mechanism 4 and the housing mechanism 3 when moving into rolling friction force. The friction force is smaller, reducing the consumption of friction work, while making the relative movement between the coil mechanism 4 and the housing mechanism 3 smoother.

[0084] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0085] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0086] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A motor suspension, characterized in that, The motor suspension includes: a first permanent magnet mechanism (1), a second permanent magnet mechanism (2), a housing mechanism (3), a coil mechanism (4), and a rolling mechanism (5); The first permanent magnet mechanism (1) and the second permanent magnet mechanism (2) are fixedly installed inside the housing mechanism (3). The second permanent magnet mechanism (2) is arranged around the first permanent magnet mechanism (1) and spaced apart from the first permanent magnet mechanism (1). The gap between the first permanent magnet mechanism (1) and the second permanent magnet mechanism (2) forms an insertion space (31) for the coil mechanism (4) to be inserted. The coil mechanism (4) can move relative to the housing mechanism (3) along the extension direction of the insertion space (31) and cut the magnetic field generated by the first permanent magnet mechanism (1) and the second permanent magnet mechanism (2). The rolling mechanism (5) is rotatably connected to the housing mechanism (3) and is used to roll against the coil mechanism (4) when the housing mechanism (3) and the coil mechanism (4) move relative to each other; The coil mechanism (4) has a cavity (41) inside for cooperating with the housing mechanism (3). The rolling mechanism (5) includes at least two rolling parts (51), which are arranged radially along the housing mechanism (3) and roll against the inner wall of the cavity (41) and the outer wall of the coil mechanism (4) respectively when the housing mechanism (3) and the coil mechanism (4) move relative to each other.

2. The motor suspension according to claim 1, characterized in that, The coil mechanism (4) includes a first abutting section (42), a coil section (43), and a second abutting section (44) connected in sequence. The inner and outer walls of the coil segment (43) are recessed toward each other to form a first groove (431) and a second groove (432) for accommodating the coil (433). The coil (433) is disposed in at least one of the first groove (431) and the second groove (432), and the depth of the first groove (431) and the depth of the second groove (432) are both greater than the thickness of the coil (433). When the housing mechanism (3) and the coil mechanism (4) move relative to each other, the rolling mechanism (5) rolls against at least one of the first abutting section (42) and the second abutting section (44).

3. The motor suspension according to claim 1, characterized in that, The housing mechanism (3) has an annular receiving space (32) inside, and the first permanent magnet mechanism (1) and the second permanent magnet mechanism (2) are located in the annular receiving space (32); The housing mechanism (3) includes a first connecting part (33), which is located in the annular receiving space (32) and is connected to the first surface (351) and the second surface (361) of the annular receiving space (32) respectively, with the first surface (351) and the second surface (361) facing each other. The first connecting part (33) has at least two mounting grooves (331) inside, and the at least two rolling parts (51) are respectively disposed in the at least two mounting grooves (331).

4. The motor suspension according to claim 3, characterized in that, At least one of the first connecting part (33) and the housing mechanism (3) is a magnetic field constraint member, used to constrain the magnetic field generated by the first permanent magnet mechanism (1) and the second permanent magnet mechanism (2) from spreading to the outside.

5. The motor suspension according to claim 4, characterized in that, The magnetic field constraint component is a magnetic yoke structure made of any one of the following materials: soft iron, carbon steel, and soft magnetic alloy.

6. The motor suspension according to claim 3, characterized in that, The number of the first connecting parts (33) is at least two, and the at least two first connecting parts (33) are evenly distributed in the annular accommodating space (32), dividing the annular accommodating space (32) into at least two accommodating subspaces (321). The first permanent magnet mechanism (1) includes at least two first permanent magnets (11), and the second permanent magnet mechanism (2) includes at least two second permanent magnets (21). One first permanent magnet (11) and one second permanent magnet (21) are spaced apart to form a pair of permanent magnets (12). The pair of permanent magnets (12) is disposed in the accommodating subspace (321) and corresponds to each other.

7. The motor suspension according to claim 6, characterized in that, The first permanent magnet (11) and the second permanent magnet (21) in the permanent magnet pair (12) have opposite magnetic poles on the side closest to each other.

8. The motor suspension according to any one of claims 1 to 7, characterized in that, The housing mechanism (3) further includes a second connecting part (34), and the coil mechanism (4) further includes a third connecting part (45). Either the second connecting part (34) or the third connecting part (45) is used to connect to the axle, and the other is used to connect to the frame.

9. A car, characterized in that, Includes the motor suspension as described in any one of claims 1 to 8.

Images